import java.util.Scanner;

/**
 * Created With IntelliJ IDEA
 * Description:牛客网:首页 > 试题广场 > 快到碗里来
 *
 * User: DELL
 * Data: 2023-04-18
 * Time: 13:28
 */
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            double len = scanner.nextDouble();
            double r = scanner.nextDouble();
            if (len > 2*3.14*r) {
                System.out.println("No");
            } else {
                System.out.println("Yes");
            }
        }
    }
}
